ATMEGA6450V-8AI Equivalent & Substitute Parts

Part Overview

The ATMEGA6450V-8AI is an 8-bit AVR microcontroller from Microchip Technology, featuring 64KB FLASH memory, 4KB RAM, and 2KB EEPROM. This device integrates 68 I/O pins, an 8-bit ADC with 10-bit resolution, and standard peripherals including SPI, UART/USART, and USI connectivity. The part is classified as obsolete, making identification of active equivalent alternatives essential for ongoing production and design continuity.

Key Parameters

Parameter	Value
Core Processor	AVR
Core Size	8-Bit
Speed	8MHz
Program Memory Size	64KB (32K x 16)
Program Memory Type	FLASH
EEPROM Size	2K x 8
RAM Size	4K x 8
Number of I/O	68
Voltage Supply Range	1.8V ~ 5.5V
Data Converters	A/D 8x10b
Operating Temperature	-40°C ~ 85°C
Package / Case	100-TQFP (14x14)
Mounting Type	Surface Mount

Substitute Part Grouping Explanation

Substitution of the ATMEGA6450V-8AI is determined by strict equivalence across the following parameters:

Core processor architecture (AVR)
Core size (8-Bit)
Operating frequency (8MHz)
Memory configuration (64KB FLASH, 4KB RAM, 2KB EEPROM)
I/O count (68 pins)
Peripheral set (SPI, UART/USART, USI, PWM, WDT, Brown-out Detect/Reset, POR)
Voltage supply range (1.8V ~ 5.5V)
ADC specification (8x10b)
Package type (100-TQFP 14x14)
Operating temperature range (-40°C ~ 85°C)

The ATMEGA6450V-8AU meets all these criteria and is classified as an active product, making it a direct parametric equivalent suitable for replacement in applications currently using the obsolete ATMEGA6450V-8AI.

Parameter Comparison

Parameter	ATMEGA6450V-8AI	ATMEGA6450V-8AU
Manufacturer	Microchip Technology	Microchip Technology
Series	AVR® ATmega	AVR® ATmega
Core Processor	AVR	AVR
Core Size	8-Bit	8-Bit
Speed	8MHz	8MHz
Program Memory Size	64KB (32K x 16)	64KB (32K x 16)
Program Memory Type	FLASH	FLASH
EEPROM Size	2K x 8	2K x 8
RAM Size	4K x 8	4K x 8
Number of I/O	68	68
Connectivity	SPI, UART/USART, USI	SPI, UART/USART, USI
Peripherals	Brown-out Detect/Reset, POR, PWM, WDT	Brown-out Detect/Reset, POR, PWM, WDT
Voltage Supply Range	1.8V ~ 5.5V	1.8V ~ 5.5V
Data Converters	A/D 8x10b	A/D 8x10b
Oscillator Type	Internal	Internal
Operating Temperature	-40°C ~ 85°C	-40°C ~ 85°C
Mounting Type	Surface Mount	Surface Mount
Package / Case	100-TQFP (14x14)	100-TQFP (14x14)
Product Status	Obsolete	Active
RoHS Status	RoHS non-compliant	ROHS3 Compliant
Moisture Sensitivity Level	3 (168 Hours)	3 (168 Hours)
REACH Status	REACH Unaffected	REACH Unaffected
ECCN	EAR99	EAR99
HTSUS	8542.31.0001	8542.31.0001

Engineering Selection Recommendations

The ATMEGA6450V-8AU is the direct substitute for the obsolete ATMEGA6450V-8AI. Both devices share identical electrical and mechanical specifications, including core architecture, memory configuration, I/O count, and package format.

The primary distinction is product status and regulatory compliance. The ATMEGA6450V-8AU is an active product with ROHS3 compliance, whereas the ATMEGA6450V-8AI is obsolete and RoHS non-compliant. For new designs or production continuity, the ATMEGA6450V-8AU is the appropriate selection.

Both parts maintain identical moisture sensitivity levels (MSL 3, 168 hours) and export classifications (EAR99, HTSUS 8542.31.0001), ensuring compatibility in supply chain and regulatory contexts.

Frequently Asked Questions (FAQ)

Q: Are the ATMEGA6450V-8AI and ATMEGA6450V-8AU pin-compatible?

A: Yes. Both devices use the 100-TQFP (14x14) package with identical pin assignments, I/O configuration (68 pins), and electrical characteristics. Direct PCB substitution is supported without layout modifications.

Q: What is the difference between the two part numbers?

A: The suffix designates packaging format. The ATMEGA6450V-8AI uses tube packaging, while the ATMEGA6450V-8AU uses tray packaging. Electrical and functional specifications are identical.

Q: Can I use ATMEGA6450V-8AU in place of ATMEGA6450V-8AI in existing designs?

A: Yes. The ATMEGA6450V-8AU is a direct parametric equivalent with identical core specifications, memory configuration, peripherals, and operating parameters. No design changes are required.

Q: Why is the ATMEGA6450V-8AI classified as obsolete?

A: The ATMEGA6450V-8AI has been discontinued by Microchip Technology. The ATMEGA6450V-8AU remains in active production and is the recommended replacement for ongoing applications.

Q: Are there compliance differences between these parts?

A: The ATMEGA6450V-8AU is ROHS3 compliant, while the ATMEGA6450V-8AI is RoHS non-compliant. Both maintain identical REACH and export classification status (REACH Unaffected, EAR99).

Q: What are the moisture sensitivity requirements for storage and handling?

A: Both parts carry MSL 3 rating with a 168-hour floor life. Standard moisture control procedures for surface-mount components apply to both devices.

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